Castellis new aero Unlimited Skinsuit isnt the first gravel racing onesie isnt the first to integrate a sleeve for a hydration bladder on your hot, sweaty back. But together with its Rosso Corsa companion aero Unlimited Pro 2 Jersey for men & women, Castelli now offers more hydration-equipped options to boost your gravel racing aerodynamics than any other clothing maker. Castelli Unlimited gravel racing skinsuit & Pro 2 jerseys(All photos/Castelli)Whether you agree with Rule #32 or not, its clear that staying fueled and hydrated is a challenge for the longest, most intense gravel races. Many racers wear hydration vests to haul enough water and snacks. And weve reviewed the best ones out there. But many racers have looked for a lighter, more integrated, and more aero solution.And Castellis solution is to combine their top-tier aerodynamic fabric and cut of their road-racing Rosso Corsa skinsuit & jersey designs with a small mesh hydration bladder sleeve integrated high on the back. The result is easy-access storage for an extra 1.5L of water, improved rider aerodynamics creating an effective cowl tucked behind your helmet, and still a standard 3+1 pocket layout for your regular needs.Unbound XL-provenCastelli-sponsored gravel racer Rob Britton wore a prototype of this to his 2025 Unbound XL win last summer interestingly, where Lachlan Morton was riding with extra water in an aero bikepacking bag under his aero bars, not in the Blaerosuit he helped Rapha develop the year before.I received the Unlimited Speedsuit the day before Unbound, and as well as fitting really well, the leg pockets worked a charm nothing moved around and the hydration pocket was dialed. I was also able to replace the bladder quickly during the race My favorite thing about this suit is that its comfortable, as well as being super fast. Ive used it in nearly every race since my Unbound win, and its definitely progressing whats possible in gravel racing. Rob Britton of the Castelli Spirit of Gravel Cabal race team Tech detailsUnlimited Speedsuit & Unlimited Pro 2 Jersey share the close-to-body, aerodynamic upper constructionhighly breathable Air_O Stretch main body fabricUPF 30 sun protection blocks 97% of all UV raysCFD-optimized shoulder fabric and seam construction to reduce dragmesh hydration pocket for 1.5L bladder, plus shoulder & side webbing hose routing loops3 open lower rear pockets, plus 1 zip security pocketcontinuous printed-on silicone grippersUnlimited Speedsuit includes special gravel race lower half based on their road Free Aero Race S Bibshortsmade from aerodynamic Forza2 Stretch fabric, delivering a 3% decrease in CdAProgetto X2 Air Seamless seat pad for all-day comfortnutrition cargo pockets on the top of each thigh for easy access without the added drag of side cargo pocketsCastelli Unlimited Pricing, options & availabilityThe new Castelli gravel racing Unlimited Skinsuit is available now for $420 / 360 / 350 in a unisex fit and sizing, in just two color options. Pick from Vivid orange + Hot Sauce red for the skinny adventurous racers among us, or a more sensible Mango Mojito yellow + black bibs.For a bit more everyday practicality, the new Castelli Unlimited Pro 2 gravel racing jersey is offered in both mens & womens fits for $230 / 189 / 180. Men get the choice of 3 colors Elmwood tan, Paprika red, or classic black. Women get 2 color options the same Paprika red, or a patterned Forest green and Elmwood tan design with Vivid orange hydration pocket and detailing.(Photo by Federico Ravassard/Castelli)Castelli-cycling.com The post Castelli Unlimited Gravel Skinsuit Puts 1.5L of Hot Aero HO on Your Back & Snacks on Thighs appeared first on Bikerumor.